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Finding the Fourth Proportional to 85,637, 118,139.14 and 55,432.04

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Solution

The fourth proportional to 85,637, 118,139.14 and 55,432.04 is: 76,470.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,637 : 118,139.14 = 55,432.04 : x
  2. Step 2: Convert to fraction form
    85,637/118,139.14 = 55,432.04/x
  3. Step 3: Cross multiply
    85,637x = 118,139.14 × 55,432.04
  4. Step 4: Simplify right side
    85,637x = 6,548,693,534.05
  5. Step 5: Solve for x
    x = 6,548,693,534.05/85,637
  6. Step 6: Final answer
    x = 76,470.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.